3x+12=x+30+12

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Solution for 3x+12=x+30+12 equation: 



3x+12=x+30+12

We move all terms to the left:

3x+12-(x+30+12)=0

We add all the numbers together, and all the variables

3x-(x+42)+12=0

We get rid of parentheses

3x-x-42+12=0

We add all the numbers together, and all the variables

2x-30=0

We move all terms containing x to the left, all other terms to the right

2x=30

x=30/2

x=15

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